UV Index in Santo Tomas, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Santo Tomas, Mexico, where the climate can intensify ultraviolet ray exposure to alarming levels. With a peak UV Index soaring to 14 during midday, knowing these levels can significantly aid in sunburn prevention and maintain long-term skin health. The BSk climate of Santo Tomas brings warm, dry conditions that can mask the dangers of sun exposure, making it essential to stay informed about UV risks throughout the day. Keep your skin safe by understanding the UV Index and planning your outdoor activities accordingly!

Hourly UV Index in Santo Tomas

The UV Index today shows a clear progression of intensity, starting with a maximum of 1 at 07:00, signaling a relatively safe morning. As the sun climbs, it peaks at a dramatic 14 at 13:00, indicating a high risk for sun exposure. From 10:00 onwards, the UV levels escalate rapidly, reaching 10 at 11:00 and a scorching 13 at noon. The afternoon sees a gradual decline, with the index easing back to 10 at 15:00, and further down to 4 by 17:00. The evening offers relief as it drops to 2 by 18:00 and finally settles at 1 by 19:00. It’s crucial to be sun-smart during peak hours, especially between 11:00 and 14:00.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	10	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Santo Tomas

Throughout the year, the UV Index shows significant seasonal changes, with the highest readings occurring from March to September. These months see extreme levels, peaking at 14 in June, with a consistent burn time of just 10 minutes. The high-risk months for UV exposure are February to October, especially March through September. Residents and visitors are strongly advised to take precautions during these times, such as wearing sunscreen, protective clothing, and sunglasses, and seeking shade, particularly during peak sun hours. As the UV Index dips in November and December, attention to sun safety remains important, with high categories still in place.

Monthly Maximum UV Index for Santo Tomas, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Santo Tomas. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Santo Tomas, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Santo Tomas UV Index with Other Mexico Cities

The table above highlights how UV exposure in Santo Tomas compares to other major locations across Mexico. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Santo Tomas's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Santo Tomas	6	9	11	13	13	14	13	13	12	10	8	6
Guadalajara UVI	9	11	14	14	14	13	13	13	13	12	9	8
Iztapalapa UVI	10	12	14	15	14	14	14	14	14	12	10	8
Ecatepec de Morelos UVI	10	12	14	15	15	14	14	13	14	12	10	8
Mexico City UVI	10	12	14	15	15	14	14	13	14	12	10	8
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9